WEEK 9 Flashcards
(27 cards)
What nerve innovates facial expression?
Facial nerve (CNII)
What muscles are used in happiness facial expressions?
- Zygomaticus
- Buccinator
- Frontalis
What muscles are used in sadness facial expressions?
- Orbicularis Oculi
- ## Depressor Labii
What muscles are used in anger facial expressions?
- Frontalis
- Orbicularis Oris
Classification of the temporomandibular joint?
Synovial, biaxial, condyloid
- Elevation and depression
- Protraction and retraction
- Lateral deviation
Actions of the masseter (muscle of mastication)?
- Elevation and protraction
Actions of the Temporalis (muscle of mastication)?
Elevation and retraction
Actions of the lateral pterygoid (muscle of mastication)?
Depression and protraction
Actions of the medial pterygoid (muscle of mastication)?
Elevation and protraction
Functions of the vertebral column
- Supports our body weight
- Protects spinal cord and nerves
- Allows trunk movement
- Attachment sight for muscles and ligaments
What are the 5 regions of the vertebral column?
- Cervical spine (neck)
- Thoracic
- Lumbar
- Sacral
- Coccygeal
Number of vertebrae in the Cervical spine?
7
Number of vertebrae in the thoracic vertebrae?
12 - each associated with a pair of ribs
Number of vertebrae in the lumbar vertebrae?
5
Number of vertebrae in the sacral vertebrae?
5 fused vertebrae
Number of vertebrae in the coccygeal vertebrae?
4 fused vertebrae
What is the function of curvatures in the spine?
- Help to maintain upright posture and stability
- Primary curvatures are found in the thoracic spine and sacro-coccygeal region
What is the vertebral body?
- Where weight is bared through our vertebrae
- They stack on top of each other
What is the spinus process of the vertebrae? (in the middle)
- Attachment site of muscles
- Restricts and permits movement
What is the transverse process of the vertebrae? (on the outside)
- Attachment site of muscles
- Restricts and permits movement
What is the articular process of the vertebrae?
- The inferior articular process of the vertebrae above articulates with the superior articular process of the vertebrae below
What is the articular facet of the vertebrae?
Cartilage covered portion of this boney projection
What is the intervertebral foramen of the vertebrae?
- Combination of the inferior intervertebral notch articulating with the superior intervertebral notch of the vertebrae below – combine they make a hole or foramen
- Where spinal nerves exit from
Distinguishing features of the cervical vertebrae?
Bifid (split) spinous process
-Allows for more surface area for muscle attachment
Large vertebral foremen
-accommodate the thicker superior spinal cord
Small, oval shaped body
-Small weight baring role (only the weight of the head)
Transverse Foramen
-Holes in the transverse process for the vertebral artery (key blood supply to the brain) to travel through
-Protects vertebral artery
